On today’s episode of The Confluence: A report from the Bureau of Alcohol, Tobacco, Firearms and Explosives gives a first-of-its-kind look at how guns have been used in crimes from 2017 to 2021; a law professor is hosting a class to explain what residents should expect when the trial for the man charged for carrying out the Pittsburgh synagogue shooting begins in April; and a look into Pittsburgh’s role in aviation history. Today’s guests include: Josh Fleitman, Western Pennsylvania manager for CeaseFirePA; and David Harris, WESA’s legal analyst and law professor with the University of Pittsburgh.